'Katy Perry: Part of Me' debuts

Singer Katy Perry's concert film about her life was released Tuesday, complete with 3-D effects and Russell Brand. At the premiere, Perry said she wanted to "go into a cave" after the film was released.

Singer Katy Perry's concert film about her life was released Tuesday, complete with 3-D effects and Russell Brand. At the premiere, Perry said she wanted to "go into a cave" after the film was released.

Singer Katy Perry's concert film about her life was released Tuesday, complete with 3-D effects and Russell Brand. At the premiere, Perry said she wanted to "go into a cave" after the film was released.